Mobile Communication System, Core Network Node, Control Station, Base Station, Communication Method and Program

1. A mobile communication system comprising: a mobile station; a base station adapted to transmit Multimedia Broadcast Multicast Service (MBMS) data to the mobile station; a core network node adapted to transmit, to the base station, an MBMS session start request message that includes a time to MBMS data transfer and a time of MBMS data transfer which denotes a time of a start of the MBMS data transfer, wherein the time to MBMS data transfer is different from the time of MBMS data transfer; and wherein the base station receives the MBMS session start request message including the time to MBMS data transfer and the time of MBMS data transfer, wherein a radio resource setup is performed according to the time of MBMS data transfer, and wherein the MBMS session start request message further includes subcarrier numbers and symbol numbers for allocating MBMS data, MBMS data allocation time and frequency, and resource block numbers.

2. The mobile communication system according to claim 1 , wherein the base station transmits the MBMS data to the mobile station according to the time to MBMS data transfer.

3. A base station in a mobile communication system comprising a mobile station and a core network node; the base station comprising: a receiver adapted to receive, from the core network node, a Multimedia Broadcast Multicast Service (MBMS) session start request message that includes a time to MBMS data transfer and a time of MBMS data transfer which denotes a time of a start of the MBMS data transfer, wherein the time to MBMS data transfer is different from the time of MBMS data transfer, wherein a radio resource setup is performed according to the time of MBMS data transfer, and wherein the MBMS session start request message further includes subcarrier numbers and symbol numbers for allocating MBMS data, MBMS data allocation time and frequency, and resource block numbers.

4. The base station according to claim 3 , wherein the base station further comprises a transmitter adapted to transmit the MBMS data to a mobile station according to the time to MBMS data transfer.

5. A mobile station in a mobile communication system comprising a base station and a core network node, the mobile station comprising: a receiver adapted to receive Multimedia Broadcast Multicast Service (MBMS) data from the base station, wherein the MBMS data is based on a time to MBMS data transfer and a time of MBMS data transfer which denotes a time of a start of the MBMS data transfer, wherein the time to MBMS data transfer is different from the time of MBMS data transfer, and wherein an MBMS session start request message, including the time to MBMS data transfer and the time of MBMS data transfer, is transmitted from the core network node to the base station, wherein a radio resource setup is performed according to the time of MBMS data transfer, and wherein the MBMS session start request message further includes subcarrier numbers and symbol numbers for allocating MBMS data, MBMS data allocation time and frequency, and resource block numbers.

6. The mobile station according to claim 5 , wherein the receiver is further configured to receive, from the base station, the MBMS data according to the time to MBMS data transfer.

7. A core network node in a mobile communication system comprising a mobile station and a base station; the core network node comprising: a transmitter adapted to transmit, to the base station, a Multimedia Broadcast Multicast Service (MBMS) session start request message that includes a time to MBMS data transfer and a time of MBMS data transfer which denotes a time of a start of the MBMS data transfer, wherein the time to MBMS data transfer is different from the time of MBMS data transfer, wherein a radio resource setup is performed according to the time of MBMS data transfer, and wherein the MBMS session start request message further includes subcarrier numbers and symbol numbers for allocating MBMS data, MBMS data allocation time and frequency, and resource block numbers.

8. The core network node according to claim 7 , wherein the base station transits the MBMS data to the mobile station according to the time to MBMS data transfer.

9. A method for a core network node in a mobile communication system comprising a mobile station and a base station, the method comprising: including a time to Multimedia Broadcast Multicast Service (MBMS) data transfer into an MBMS session start request message; and transmitting, to the base station, the MBMS session start request message that includes the time to MBMS data transfer and a time of MBMS data transfer which denotes a time of a start of the MBMS data transfer, wherein the time to MBMS data transfer is different from the time of MBMS data transfer, wherein a radio resource setup is performed according to the time of MBMS data transfer, and wherein the MBMS session start request message further includes subcarrier numbers and symbol numbers for allocating MBMS data, MBMS data allocation time and frequency, and resource block numbers.

10. The method according to claim 9 , further comprising the base station transmitting the MBMS data to the mobile station according to the time to MBMS data transfer.